#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
    char a[1024] = {};
    printf("aaaaaaa==%d==aaaa\n", sizeof(a));
    char *b = (char *)malloc(1024);
    printf("bbbbbbbb==%d==bbbbbb\n", sizeof(b));
    printf("ccccccc==%d==ccccc\n", strlen(b));

    return 0;
}